/Engine/Plugins/Media/PixelStreaming/Source/PixelStreaming/Public/PixelStreamingVideoInput.h
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IPixelCaptureOutputFrame](API\Plugins\PixelCapture\IPixelCaptureOutputFrame) > RequestFormat ( int32 Format, int32 LayerIndex )